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1. The effect of dietary sucrose on carcass composition was determined in conventional (CV) and germ-free (GF) mice fed on a control diet and on diets containing 20 and 40% sucrose. 2. Germ-free mice fed the control diet were heavier than their conventional counterparts. CV mice fed on sucrose diets were, however, heavier than their GF counterparts. 3. GF mice fed on high-sucrose diets showed a lower lipid content on carcass than the GF controls and their CV counterparts. 4. CV mice fed the high-sucrose diets were heavier than the conventional animals fed on the control diet. 5. The water content in the carcass of GF mice fed on high sucrose diets was higher than that of controls, as well as their CV counterparts. 6. The present results suggest different lipidogenic effect of dietary sucrose in germ-free and conventional mice.

A semi-solid corn-meal diet sterilized in glass flasks in a hospital-type autoclave is described. The values of weight gain, feed efficiency, apparent digestibility, and cecal diameters were the same for germ-free mice fed either on this diet or on a soybean meal and alfalfa diet (L-485), widely used in germ-free research. The corn-meal diet has been successfully used for eight years.

A processing for cattle blood consisting of protein coagulation and drying at mild temperatures is described. The protein efficiency ratio and the food efficiency of this blood meal supplemented with isoleucine were similar to those obtained for casein. Fortification of commercial blood meal with isoleucine did not improve much its quality.

Hen's non-hatched eggs were processed by boiling for 30 minutes, milling in a meat grinder, and drying at 60 degrees C with continuous ventilation. The product contained 36% of protein, 27% of ether extract, 17% of ash, 10% of calcium, and 0.6% of phosphorus. The quality of the protein was comparable to that of a reference casein and of fresh egg meal, as determined by protein efficiency ratio and apparent net protein utilization.